diff --git a/Tests/Test/Constraint/ResponseIsRedirectedTest.php b/Tests/Test/Constraint/ResponseIsRedirectedTest.php
index a3a460636..a8314c259 100644
--- a/Tests/Test/Constraint/ResponseIsRedirectedTest.php
+++ b/Tests/Test/Constraint/ResponseIsRedirectedTest.php
@@ -29,7 +29,7 @@ public function testConstraint(): void
         try {
             $constraint->evaluate(new Response());
         } catch (ExpectationFailedException $e) {
-            $this->assertContains("Failed asserting that the Response is redirected.\nHTTP/1.0 200 OK", TestFailure::exceptionToString($e));
+            $this->assertStringContainsString("Failed asserting that the Response is redirected.\nHTTP/1.0 200 OK", TestFailure::exceptionToString($e));
 
             return;
         }
diff --git a/Tests/Test/Constraint/ResponseIsSuccessfulTest.php b/Tests/Test/Constraint/ResponseIsSuccessfulTest.php
index 0c99a5e48..b59daf8a3 100644
--- a/Tests/Test/Constraint/ResponseIsSuccessfulTest.php
+++ b/Tests/Test/Constraint/ResponseIsSuccessfulTest.php
@@ -29,7 +29,7 @@ public function testConstraint(): void
         try {
             $constraint->evaluate(new Response('', 404));
         } catch (ExpectationFailedException $e) {
-            $this->assertContains("Failed asserting that the Response is successful.\nHTTP/1.0 404 Not Found", TestFailure::exceptionToString($e));
+            $this->assertStringContainsString("Failed asserting that the Response is successful.\nHTTP/1.0 404 Not Found", TestFailure::exceptionToString($e));
 
             return;
         }
diff --git a/Tests/Test/Constraint/ResponseStatusCodeSameTest.php b/Tests/Test/Constraint/ResponseStatusCodeSameTest.php
index 3e15e9067..53200fdd0 100644
--- a/Tests/Test/Constraint/ResponseStatusCodeSameTest.php
+++ b/Tests/Test/Constraint/ResponseStatusCodeSameTest.php
@@ -31,7 +31,7 @@ public function testConstraint(): void
         try {
             $constraint->evaluate(new Response('', 404));
         } catch (ExpectationFailedException $e) {
-            $this->assertContains("Failed asserting that the Response status code is 200.\nHTTP/1.0 404 Not Found", TestFailure::exceptionToString($e));
+            $this->assertStringContainsString("Failed asserting that the Response status code is 200.\nHTTP/1.0 404 Not Found", TestFailure::exceptionToString($e));
 
             return;
         }